Pls tell me what is equivalent to these and tell the right number 27 points

33% of college students say they use credit cards because of the rewards program. you randomly select 10 college students and ask each to name the reason he or she uses credit cards. find the probability that the number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. if convenient, use technology to find the probabilities.

With number 11 ( show how you got the answer)

Ab and bc are tangent to circle d. find x is ab = 3x + 8 and bc = 26. find x